what oil are you guys running??

Royal purple break-in for my new cam then their HPS 20w50.

And now for something completely different.

The engines we build for our drones get the Joe Gibbs break in oil, then they get the Joe Gibbs 15w50 after break in. Aircraft endurance is about 16 hours and the oil is changed out after every flight.

P.S.
Yes, that's a B block in the trunk of my 68 fastback.
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